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dev/ast/exists.h
33 строки
909 B
klaus triendl
Split method implementations to their respective header files
24 мар 2022, 22:32
24 мар 2022, 22:32
c2ac77b
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#pragma once #include <utility> // std::move #include "../tags.h" namespace sqlite_orm { namespace internal { template<class T> struct exists_t : condition_t, negatable_t { using expression_type = T; using self = exists_t<expression_type>; expression_type expression; exists_t(expression_type expression_) : expression(std::move(expression_)) {} }; } /** * EXISTS(condition). * Example: storage.select(columns(&Agent::code, &Agent::name, &Agent::workingArea, &Agent::comission), where(exists(select(asterisk<Customer>(), where(is_equal(&Customer::grade, 3) and is_equal(&Agent::code, &Customer::agentCode))))), order_by(&Agent::comission)); */ template<class T> internal::exists_t<T> exists(T expression) { return {std::move(expression)}; } }